/**
 *   nTorrent - A GUI client to administer a rtorrent process 
 *   over a network connection.
 *   
 *   Copyright (C) 2007  Kim Eik
 *
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package ntorrent.tools;

import java.io.IOException;
import java.net.ServerSocket;

/**
 * This static class is a helper class to find a free socket port on the running machine.
 * @author Kim Eik
 *
 */
public abstract class LocalPort {
	/**
	 * Finds a free, unused local port.
	 * @return int, free port
	 * @throws IOException
	 */
	public static int findFreePort() throws IOException {
		ServerSocket server = new ServerSocket(0);
		int port = server.getLocalPort();
		server.close();
		return port;
	}
}
